According to the dietary guidelines for a 2 000 calorie diet which food group do humans need the least

Of good nutrition because it is essential to all forms of metabolism in the body

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

Describe how the above factors create barriers for maintaining your mental and emotional health what barriers do they create